American Thoracic Society Documents 401 Figure 2. Algorithm forinitiating empiric antibi-otic therapy for hospital-acquired pneumonia (HAP),ventilator-associated pneu-monia (VAP), and health-care-associatedpneumonia(HCAP). Figure 2.
One milligram is one thousandth of a gram and one thousand micrograms. A milligram is generally abbreviated as mg. MICROGRAM. One microgram is one millionth of a gram and one thousandth of a milligram. It is usually abbreviated as mcg or ug. Mcg and ug are the same.
The difference between a milligram and a kilogram is quantity. With one gram as the basic unit of measure, one milligram is one one thousandth (1/1000) of a gram. One kilogr â¦ am is one thousand (1000) grams. Therefore one kilogram is one million milligrams (1000 milligrams per gram times 1000 grams per kilogram).